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2 years ago

Can someone explain how to do this im not very smart

Mathematics

1 answer:

GuDViN [60]2 years ago

6 0

Answer:

50.24sq units

Step-by-step explanation:

4^2=4x4

4x4=16

16x3.14=50.24

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Liam opened a savings account with a $400 deposit and a simple interest rate of 7.5%. If the balance of the account is now $670

Vinil7 [7]

Answer:

If he deposited weekly, he would be depositing 9 dollars each week.

Step-by-step explanation:

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6 0

3 years ago

M−2 over 4 =5 over 20

Ne4ueva [31]

m=3
Plug it in and it should work
3-2 =1 over 4 which is the same as 5 over 20 because both as a percentage equal 25% or 1/4 or 0.25 if you put it in a calculator as calculators provide decimal answers

5 0

3 years ago

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

jeka94

by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

<u>Step-by-step explanation:</u>

Here we have , expression x2 + 20 = 2x or , $x^2 + 20 = 2x$ .

We know that Quadratic formula is :

$x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

$x^2 + 20 = 2x$

⇒ $x^2-2x+20=0$

$a=1\\b=-2\\c=20$

Putting this value in equation $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$ :

⇒ $x = \frac{-b \pm \sqrt{b^{2}-4ac}}{2a}$

⇒ $x = \frac{-(-2) \pm \sqrt{(-2)^{2}-4(1)(20)}}{2(1)}$

⇒ $x = \frac{2 \pm \sqrt{4-80}}{2}$

⇒ $x = (\frac{2 \pm 2i\sqrt{19}}{2})$

⇒ $x = 1 \pm (1)i\sqrt{19}}$

Therefore , by Quadratic formula , $x^2 + 20 = 2x$ , values of x are $x = 1 \pm (1)i\sqrt{19}}$ . None of mentioned options are correct according to question!

7 0

3 years ago

Richard makes 8 quarter-pound hamburgers on the grill. how many pounds of hamburger meat does he use?

Soloha48 [4]

Meat = 8 * 0.25 = 2 lb

8 0

3 years ago

Need answers ASAP<br> linear pair vertical adjacent none of these

andrey2020 [161]

For the parallel lines 1/2 the vertical line is 1 & the horizontal line is 2 so if you multiply both of them should equal 3. I don't acually know about the other one though

6 0

3 years ago